package com.ecube.mqtt.listener;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.ecube.mqtt.MqttUtils;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import org.eclipse.paho.client.mqttv3.*;
import org.eclipse.paho.client.mqttv3.persist.MemoryPersistence;

import java.util.Map;
import java.util.Objects;

public class SubscribeSample{
    public static void main(String[] args) {
        message();
    }
    public static String getChgNo(String json){
        JsonObject jsonObject = JsonParser.parseString(json).getAsJsonObject();
        String dataBody = jsonObject.get("dataBody").toString();
        JsonObject jsonObject1 = JsonParser.parseString(dataBody).getAsJsonObject();
        String chgId = jsonObject1.get("chgID").toString();
        return chgId;
    }

    public static String getSnno(String json){
        JsonObject jsonObject = JsonParser.parseString(json).getAsJsonObject();
        String dataBody = jsonObject.get("header").toString();
        JsonObject jsonObject1 = JsonParser.parseString(dataBody).getAsJsonObject();
        String snno = jsonObject1.get("index").toString();
        return snno;
    }
 public static void message(){//EMQ X 默认端口 1883
     String broker = "tcp://10.4.6.74:12883";
     String TOPIC = "100040002/1012403200900051/M2S/request";
     int qos = 2;
     String clientid = "subClient-11";
     String userName = "admin";
     String passWord = "veZgHjmY";
     try {
         // host为主机名，test为clientid即连接MQTT的客户端ID，一般以客户端唯一标识符表示，MemoryPersistence设置clientid的保存形式，默认为以内存保存
         MqttClient client = new MqttClient(broker, clientid, new MemoryPersistence());
         // MQTT的连接设置
         MqttConnectOptions options = new MqttConnectOptions();
         // 设置是否清空session,这里如果设置为false表示服务器会保留客户端的连接记录，这里设置为true表示每次连接到服务器都以新的身份连接
         options.setCleanSession(true);
         // 设置连接的用户名
         options.setUserName(userName);
         // 设置连接的密码
         options.setPassword(passWord.toCharArray());
         // 设置超时时间 单位为秒
         options.setConnectionTimeout(10);
         // 设置会话心跳时间 单位为秒 服务器会每隔1.5*20秒的时间向客户端发送个消息判断客户端是否在线，但这个方法并没有重连的机制
         options.setKeepAliveInterval(20);
         // 设置回调函数
         client.setCallback(new MqttCallback() {

             public void connectionLost(Throwable cause) {
                 System.out.println("connectionLost");
             }

             public void messageArrived(String topic, MqttMessage message) {
                 System.out.println("======监听到来自[" + topic + "]的消息======");
                 String json = new String(message.getPayload());
                 System.out.println("message content:"+ json);
                 System.out.println("============");

                 MqttUtils.sendPowerAdjustSetReq("UAT","100040002","", getChgNo(json),getSnno(json),"1");
             }

             public void deliveryComplete(IMqttDeliveryToken token) {
                 System.out.println("deliveryComplete---------"+ token.isComplete());
             }

         });

         // 建立连接
         System.out.println("连接到 broker: " + broker);
         client.connect(options);

         System.out.println("连接成功.");
         //订阅消息
         client.subscribe(TOPIC, qos);
         System.out.println("开始监听" + TOPIC);
     } catch (Exception e) {
         e.printStackTrace();
     }}
}
